Perfluorononanoic acid (PFNA)
Branchville W Department
Perfluorononanoic acid, otherwise known as PFNA or C9, is a PFC similar in function and use to PFOA. These chemicals were used in the production of non-stick, stain repellent and chemically inert coatings. Click here to read more about perfluorinated chemicals.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | 2.74 ppt | 5 | 5 | 2.10 ppt - 3.30 ppt |
| 2020 | 2.40 ppt | 4 | 4 | 2.20 ppt - 2.80 ppt |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 4 | 0 | ND |
ppt = parts per trillion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.006 ppt
The EWG Health Guideline of 6 ppt for perfluorononanoic acid was defined by EPA recommended application of the toxicity value for PFDA published in the Integrated Risk Information System’s toxicological review . This health guideline harm to the immune system and harm to fetal growth and child development.
EPA Maximum Contaminant
Level (MCL): 10 ppt
ppt = parts per trillion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2019-01-16 | 4181842 | 2.80 ppt |
| 2019-05-15 | 4298463 | 3.10 ppt |
| 2019-08-07 | 4381053 | 2.40 ppt |
| 2019-09-23 | 4434939 | 3.30 ppt |
| 2019-10-16 | 4460136 | 2.10 ppt |
| 2020-01-21 | 4544764 | 2.20 ppt |
| 2020-05-05 | 4621144 | 2.80 ppt |
| 2020-07-13 | 4670357 | 2.30 ppt |
| 2020-10-19 | 4754497 | 2.30 ppt |
| 2021-01-22 | 4820599 | ND |
| 2021-04-05 | 4871013 | ND |
| 2021-07-14 | 4955209 | ND |
| 2021-10-04 | 202110060112 | ND |
| 2022-01-12 | 810-11981-1 | ND |
| 2022-04-06 | 810-20028-1 | ND |
| 2022-07-12 | 810-30366-1 | ND |
| 2022-10-17 | 810-41715-1 | ND |
| 2023-01-16 | 810-50590-1 | ND |
| 2023-04-11 | 810-59810-1 | ND |
| 2023-07-03 | 810-68724-1 | ND |
| 2023-10-12 | 810-81354-1 | ND |